Question

30. 25. The sum of the times taken by train P and train Q to cross their own lengths is twice the time taken by them to cross each other when they are travel- ling in opposite direction to each other. If P takes 20 s to cross a stationary pole, then find the time taken by Q to do the same. (in seconds) (b) 30 (c) 20 (d) 15 (a) 25​

Answer 1

Answer:

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